what is the difference between 110 volts and 220 volts .?

Question

1- which one is safer?
2-which one is cheaper and why ?

tks

Answer 1

1- both voltage can caused serious injury
2- 220 is much cheaper ex. if you have a motor that works on a
110-220v and plug it to 110v and draws a 2amps current then
plugging this motor at at a higher volts of 220v will only make
a current draw of 1amps providing that the motor runs in the
same load and that is how we charge of how much current
we used in a period of time not voltage this is one reason why
in industrial company which uses lots of motor makes use of
a 440v

Answer 2

The literal difference is 110 Volts. In one sense 110 Volts is safer but either one can kill you or ruin the next 15 minutes of your life. Given the same situation, of course 220 Volts will do more damage to the body than 110 Volts. Neither is cheaper. Electricity is sold by the kilowatt/hour and it matters not at all whether you use 220 Volts or 110 Volts, the rate and price is exactly the same.

Answer 3

110 volts 110 is safer and much cheaper because 220 uses twice as much power

Answer 4

The difference is that a 220v power source produces twice as much voltage than a 110v power source. But the most important thing to remember is that a high current is the one that electrocutes not a high voltage given the same power rating. In electrical and electronics engineering formula, Power (watts) equals Voltage (volts) times the Current (amperes) [ P=V I ]. A 220v power source is much safer because it uses less current than a 110v power source with the same power rating. But remember both can still give you a good shock. For example, given a power rating of 10,000W , using the formula above, a 220v power source uses only 45.45 amperes of current while a 110v power source uses 90.91 amperes of current.

For us end-users is doesn't make a difference because we are charged by our power consumption (in kilowatt-hr) not by voltage.

Answer 5

210 coz its 10 volts less
and 210 volts coz its 10 volts cheaper.

Answer 6

110 volts.

Answer 7

power consumption is the same
twice the voltage half the current same power as
half the voltage and twice the current.
niether are safe if you stick a fork in the outlet
so they cost the same